Apparatus for mixing atomized fuel with the air in internal-combustion engines.



E. C. BLACKSTONE & F. 6I E. CARTER. APPARATUS FOR MIXING AToIvIIZED FUEL WITH THE AIR IIII INTER APPLICATION FILED MAR. I6, 1915.

Patented Feb. 8, 1916;

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E. C. BLACKSTLINE L E. L E. CARTER. APPARATUS FoFI MIXING AFoIIIIZFD FLIFL w ITH THE AIR IN INTERNAL CONI BUSTION ENGINES. APPLICATION FILED MAR. I6. I9I5.

Patented Feb. 19H5.

3 SHEETS-SHEET 2 E. C. BLACKSTONE & F. & E. CARTER.

ATOMIZED FUEL WITH THE AIR IN INTERNAL COMBUSTION ENGINES.

APPLICATION F1LED,MAR.16.I1915.

APPARATUS FOR MIXING Patented Feb. 8, 1916.

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EDWARD c. BLAcKsToND, FRANK CARTER., AND DvERsHED CARTER, or STANFORD,

ENGLAND.

APPARATUS'FOR MIXING ATOMIZED FUEL WITH THE AIR IN INTERNAL-COMBUSTION ENGINES.

Specification of Letters Patent.

Patented Feb. e, raie.

Application filed March 16, 1915. Serial No. 14,766.

To aZZ whom t may concern:

Be it know that we, EDWARD CHRISTOPHER BLAoKsToNE, FRANK CARTER, and EVDRSHED CARTER, engineers and subjects of the King of Great Britain, residing at Rutland Engineering Ivorks, Stamford, in the county of Lincoln, England, have invented new and useful Improvements in Apparatus for Mixing Atomized Fuel with the Air in Internal-Combustion Engines; and we do hereby declare the following to be a full, clear, and exact such as will enable others skilled in the art to lwhichit appertains to make and use the same.

Our invention relates to fuel spraying apparatus for internal combustion engines, in which the fuel is sprayed by compressed air, and has for its object the provisionfof means for mixing the atomized fuel with the air in the combustion chamber.

According to our invention We arrange in front of the air jet a port or channel either in or leading intothe combustion chamber and open to the combustion chamber at both ends, in such a manner that the rush of atomized fuel or air from the jet through this port or channel causes a circulation of the contents of the said chamber.

In one way of carrying out our invention we provide one or more ports, leading from any suitable part of the combustion chamber into the main port through which the injecting air is blown and arrange the outlet of these ports in such a relation to the air jet that the injection of the compressed air causes a stream of air to flow through thel main port mixing on its way with the atomized fuel which may be introduced at any suitable point, either into a circulating port or into the main port or behind the air jet. Ignition may be effected by an electric sparking apparatus. i

To enable our invention to be `fully understood we will describe the sa-me With refer-- ence to the accompanying drawings in which z- Figure 1 is a sectional elevation of our fuel and air mixing apparatus. Fig. 2 is a sectional plan of the same taken on line .fte-:r Fig. 4. Fig. 3 is a sectional elevation of a modification of our invention. Fig. 4 is an end elevation of the arrangement shown in Figs. l and Fig. 5 is a sectional description of the invention, I

' b', b are arranged closer elevation of a further modification. Fig. 6 is' an end elevation of the cylinder of an' engine fitted with our apparatus. Fig. 7 is a plan of the same;

Referring now to Figs. 1 to 5, is the combustion chamber and b a port leading into 1t, and open to the combustion chamber at itsrear end through the air circulating ports b', b. the air jet controlled by the valve c which is pressed on to its seat by the spring e and actuated by the lever f the free end of which engages the collar e2 onV the valve e. gis a chamber to which compressed air is supplied by means of the duct l1., the air being lead to the valve seat through the ports al', cl. The lever f is operated in any suitable way from the outside of the chamber' g, through the spindle f and lever f2, the bearing being made air-tight. i is the insulated electrode vof an` electrical ignition device and iis the arm actuated by the lever 2 l circuit breaking and spindle 3. In Figs. 1 and 2, the fuel is introduced through one ofthe circulating ports and delivers into the main port in front of the air jet d. In Fig. 3 the fuel is delivered into the port between the air valve e and the jet l and two air circulating ports in to the central port I) which is optional. In Fig. 5 the fuel is introduced behind the valve sea-ting.

Referring now to Figs. 6 and 7, j is the outside of the combustion chamber and Il: the cam shaft driven from the crank shaft in the usual manner. operated'by the'cam 7c through the lever k2 pivoted at 7c3. Z is the governor controlling the suction stroke of the pump by means of the lever Z and wedge Z2. The lever f2 controlling the fuel spraying valve e, is actuated by the cam n, through the lever` n' and connecting rod n2. magneto, the armature ofr` which is oscillated bv the connecting rod (1 on the crank pin q. The free end of the rod g is carried by the link Q2, the tappet g3 operating an( tripping the armature lever r. The rod s is pulled against the spring s by the pin r on the lever r after the lever 1- is tripped by the tappet o3. Theinner end `of the rod sis connected to the lever 2 which actuates the circuit breaking arm i. To avoid complicating vthe drawing the governor gear and fuel pump are omitted in Fig. 7.

c is the fuel supply pipe and doisa.

. The operation of the apparatus is as follows z-N ear the end of the compression stroke the fuel pump m causes the fuel to rise in the duct c, and 'the cam al opens the valve e. The air blast issuing from the orfice Z will lift the fuel and eject it. through the port b breaking it up into a fine mist and at the same time causing a sharp draft of air from the combustion chamber.` to flow through the ports b, thus more perfectly mixing the atomized fuel with the air in the combustion chamber.' At the correct time' the tappet Q3 releases the lever r, giving the ignition spark at a point z', Fig. 4in the path of a portion of the sprayed fuel;

AW'hat we do claim as our invention and desire to secure by Letters Patent is:-

1. In an internal combustion engine, the combination With' the combustion chamber, of a compressed air reservoir having a passage communicating With the chamber, a nozzle in said passage, a valve controlling said nozzle, means for delivering fuel to the pas- Sage whereby a mixture of air and fuel is delivered to the combustion chamber, and means forcircilating the mixture delivered to the combustion chamber back in the direction of the reservoir and` then redelivering same tothe passage in advance of the nozzle.

2. In an internal combustion engine, the combination with the combustion chamber including a compressed air reservoir in its Wall and having a passage in its Wall connecting the chamber with the reservoir, the Wall of said chamber further having a circulated passage communicating at one end with the chamber and at its other end with 'the first named passage, a nozzle in the lirst named passage outwardly ofits connection with the second named passage, a valve controlling said nozzle, and means for delivering fuel to the first named passage.

In testimony whereof we have signed our names to this specification in the presence of two witnesses.

EDWD. C. BLACKSTONE. vFRANK CARTER- EVERSHED CARTER. lVitnesses: I

ERN'es'r Enw. BLACKSTONE,

RICHARD WATTS. 

